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i965/vec4: implement double unpacking

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Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Matt Turner <mattst88@gmail.com>
This commit is contained in:
Iago Toral Quiroga
2016-06-01 09:58:00 +02:00
committed by Samuel Iglesias Gonsálvez
parent 7ec57e91d6
commit 94cfdf586a
1 changed files with 12 additions and 0 deletions
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src/mesa/drivers/dri/i965/brw_vec4_nir.cpp
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@@ -1533,6 +1533,18 @@ vec4_visitor::nir_emit_alu(nir_alu_instr *instr)
break;
}
case nir_op_unpack_double_2x32_split_x:
case nir_op_unpack_double_2x32_split_y: {
enum opcode oper = (instr->op == nir_op_unpack_double_2x32_split_x) ?
VEC4_OPCODE_PICK_LOW_32BIT : VEC4_OPCODE_PICK_HIGH_32BIT;
dst_reg tmp = dst_reg(this, glsl_type::dvec4_type);
emit(MOV(tmp, op[0]));
dst_reg tmp2 = dst_reg(this, glsl_type::uvec4_type);
emit(oper, tmp2, src_reg(tmp));
emit(MOV(dst, src_reg(tmp2)));
break;
}
case nir_op_unpack_half_2x16:
/* As NIR does not guarantee that we have a correct swizzle outside the
* boundaries of a vector, and the implementation of emit_unpack_half_2x16